What Causes the Squeaking Sound When Pressing the Brake Pedal?
3 Answers
The squeaking sound when pressing the brake pedal is caused by an incorrect contact angle between the brake pads and the brake disc, or it could be due to the recent replacement of new brake pads. The brake is a mechanical braking device that can slow down the vehicle, also known as a decelerator. The car brake pedal is located below the steering wheel. Pressing the brake pedal causes the brake linkage to be compressed and transmitted to the brake pads on the brake drum, which then clamp the brake disc, slowing down or stopping the vehicle. The manual brake in a car is located next to the gear shift and is connected to the brake lever. Another common type is the bicycle brake, which slows down the bike through rod-shaped brakes fixed on the frame or disc caliper brakes.
I've been driving for almost 20 years and have encountered the squeaking brake pedal issue several times. It's usually caused by rust on the pedal spring or friction due to lack of lubrication at the pivot point. The rusting process accelerates and worsens if water seeps in after car washing. Additionally, aging rubber components in the vacuum booster can produce similar sounds, especially common in older vehicles. This is no minor issue - any abnormal noise in the braking system indicates increased safety risks. I once ignored it and almost rear-ended another car when I couldn't brake properly in the rain. Since then, I've made it a habit to have mechanics check the pedal lubrication system during maintenance, applying some anti-rust grease for both quiet operation and safety. I also try to avoid parking in damp environments to prevent accelerated rusting. A car is like a person - if you don't address minor problems early, major troubles will come knocking.
As a new driver, I was startled by the squeaking sound when stepping on the brakes right after buying my car, fearing it was broken. My experienced neighbor told me it might be due to rust or looseness in the pedal spring, especially if the car hasn't been driven much and sat idle for long. Dust or small stones stuck in the joints can also cause friction noises. He suggested buying a lubricant spray to apply on the pedal pivot as a simple fix. I followed his advice, and after lubrication, the noise reduced somewhat, but I still felt uneasy. I plan to visit a professional shop this weekend for a comprehensive brake system check. Such issues should be addressed promptly to avoid affecting driving confidence and to prevent higher risks if brake problems arise. Regularly driving the car to prevent parts from rusting due to prolonged inactivity and keeping it clean can also help prevent such noises.
